Patents by Inventor Celine Liekens

Celine Liekens has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for producing aromatic amines
    Patent number: 8809588
    Abstract: The invention relates to a process for preparing aromatic amines by catalytically hydrogenating the corresponding aromatic nitro compound, which comprises using a copper catalyst with a support comprising SiO2, the SiO2 having been prepared by wet grinding and subsequent spray drying.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: August 19, 2014
    Assignee: BASF SE
    Inventors: Lucia Konigsmann, Ekkehard Schwab, Michael Hesse, Christian Schneider, Thomas Heidemann, Celine Liekens, Jutta Bickelhaupt, Dirk Theis
  • METHOD FOR PRODUCING AROMATIC AMINES
    Publication number: 20120065431
    Abstract: The invention relates to a process for preparing aromatic amines by catalytically hydrogenating the corresponding aromatic nitro compound, which comprises using a copper catalyst with a support comprising SiO2, the SiO2 having been prepared by wet grinding and subsequent spray drying.
    Type: Application
    Filed: May 5, 2010
    Publication date: March 15, 2012
    Applicant: BASF SE
    Inventors: Lucia Koenigsmann, Ekkehard Schwab, Michael Hesse, Christian Schneider, Thomas Heidemann, Celine Liekens, Jutta Bickelhaupt, Dirk Theis
  • Process for preparing aromatic amines in a fluidized-bed reactor
    Patent number: 8044244
    Abstract: A process for preparing aromatic amines by catalytic hydrogenation of the corresponding nitro compound in a fluidized-bed reactor, in which a gaseous reaction mixture comprising the nitro compound and hydrogen flows from the bottom upward through a heterogeneous particulate catalyst forming a fluidized bed, wherein the fluidized bed is provided with internals which divide the fluidized bed into a plurality of cells arranged horizontally in the fluidized-bed reactor and a plurality of cells arranged vertically in the fluidized-bed reactor, with the cells having cell walls which are permeable to gas and have openings which ensure an exchange number of the heterogeneous, particulate catalyst in the vertical direction in the range from 1 to 100 liters/hour per liter of reactor volume, is proposed.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: October 25, 2011
    Assignee: BASF SE
    Inventors: Lothar Seidemann, Lucia Koenigsmann, Christian Schneider, Ekkehard Schwab, Dieter Stuetzer, Celine Liekens
  • PROCESS FOR PREPARING AROMATIC AMINES IN A FLUIDIZED-BED REACTOR
    Publication number: 20100048955
    Abstract: A process for preparing aromatic amines by catalytic hydrogenation of the corresponding nitro compound in a fluidized-bed reactor, in which a gaseous reaction mixture comprising the nitro compound and hydrogen flows from the bottom upward through a heterogeneous particulate catalyst forming a fluidized bed, wherein the fluidized bed is provided with internals which divide the fluidized bed into a plurality of cells arranged horizontally in the fluidized-bed reactor and a plurality of cells arranged vertically in the fluidized-bed reactor, with the cells having cell walls which are permeable to gas and have openings which ensure an exchange number of the heterogeneous, particulate catalyst in the vertical direction in the range from 1 to 100 liters/hour per liter of reactor volume, is proposed.
    Type: Application
    Filed: September 14, 2007
    Publication date: February 25, 2010
    Applicant: BASF SE
    Inventors: Lothar Seidemann, Lucia Koenigsmann, Christian Schneider, Ekkehard Schwab, Dieter Stuetzer, Celine Liekens